Modifying an inbound route gives error inbound route already exists

FreePBX version is actually 16.0.10.43 but it won't allow that so I choose the next best option...

If I attempt to modify an inbound route say change the extension it goes to send it to a misc destination (cell phone) etc I get an error informing me that an inbound route for this DID/CID already exists.

This is of course 100% true which is why I am editing an existing DID. I can delete and create a new DID/CID which is the work around but this is a rather annoying little bug.